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  <title>Open a FDF document</title>
 </head>
 <body class="docs"><div id="layout">
  <div id="layout-content"><div id="function.fdf-open" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">fdf_open</h1>
  <p class="verinfo">(PHP 4, PHP 5, PHP 7)</p><p class="refpurpose"><span class="refname">fdf_open</span> &mdash; <span class="dc-title">Open a FDF document</span></p>

 </div>
 
 <div class="refsect1 description" id="refsect1-function.fdf-open-description">
  <h3 class="title">说明</h3>
  <div class="methodsynopsis dc-description">
   <span class="methodname"><strong>fdf_open</strong></span>
    ( <span class="methodparam"><span class="type">string</span> <code class="parameter">$filename</code></span>
   ) : <span class="type">resource</span></div>

  <p class="para rdfs-comment">
   Opens a file with form data. 
  </p>
  <p class="para">
   You can also use <span class="function"><a href="fdf_open_string.html" class="function">fdf_open_string()</a></span> to process the
   results of a PDF form POST request.
  </p>
 </div>


 <div class="refsect1 parameters" id="refsect1-function.fdf-open-parameters">
  <h3 class="title">参数</h3>
  <p class="para">
   <dl>

    
     <dt>
<code class="parameter">filename</code></dt>

     <dd>

      <p class="para">
       Path to the FDF file. This file must contain the data as returned from
       a PDF form or created using <span class="function"><a href="fdf_create.html" class="function">fdf_create()</a></span> and
       <span class="function"><a href="fdf_save.html" class="function">fdf_save()</a></span>.
      </p>
     </dd>

    
   </dl>

  </p>
 </div>


 <div class="refsect1 returnvalues" id="refsect1-function.fdf-open-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
   Returns a FDF document handle, or <strong><code>FALSE</code></strong> on error.
  </p>
 </div>


 <div class="refsect1 examples" id="refsect1-function.fdf-open-examples">
  <h3 class="title">范例</h3>
  <p class="para">
   <div class="example" id="example-4154">
    <p><strong>Example #1 Accessing the form data</strong></p>
    <div class="example-contents">
<div class="phpcode"><pre><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br /></span><span style="color: #FF8000">//&nbsp;Save&nbsp;the&nbsp;FDF&nbsp;data&nbsp;into&nbsp;a&nbsp;temp&nbsp;file<br /></span><span style="color: #0000BB">$fdffp&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">fopen</span><span style="color: #007700">(</span><span style="color: #DD0000">"test.fdf"</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">"w"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">fwrite</span><span style="color: #007700">(</span><span style="color: #0000BB">$fdffp</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">$HTTP_FDF_DATA</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">strlen</span><span style="color: #007700">(</span><span style="color: #0000BB">$HTTP_FDF_DATA</span><span style="color: #007700">));<br /></span><span style="color: #0000BB">fclose</span><span style="color: #007700">(</span><span style="color: #0000BB">$fdffp</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">//&nbsp;Open&nbsp;temp&nbsp;file&nbsp;and&nbsp;evaluate&nbsp;data<br /></span><span style="color: #0000BB">$fdf&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">fdf_open</span><span style="color: #007700">(</span><span style="color: #DD0000">"test.fdf"</span><span style="color: #007700">);<br /></span><span style="color: #FF8000">/*&nbsp;...&nbsp;*/<br /></span><span style="color: #0000BB">fdf_close</span><span style="color: #007700">(</span><span style="color: #0000BB">$fdf</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</pre></div>
    </div>

   </div>
  </p>
 </div>


 <div class="refsect1 seealso" id="refsect1-function.fdf-open-seealso">
  <h3 class="title">参见</h3>
  <p class="para">
   <ul class="simplelist">
    <li class="member"><span class="function"><a href="fdf_open_string.html" class="function" rel="rdfs-seeAlso">fdf_open_string()</a> - Read a FDF document from a string</span></li>
    <li class="member"><span class="function"><a href="fdf_close.html" class="function" rel="rdfs-seeAlso">fdf_close()</a> - Close an FDF document</span></li>
    <li class="member"><span class="function"><a href="fdf_create.html" class="function" rel="rdfs-seeAlso">fdf_create()</a> - Create a new FDF document</span></li>
    <li class="member"><span class="function"><a href="fdf_save.html" class="function" rel="rdfs-seeAlso">fdf_save()</a> - Save a FDF document</span></li>
   </ul>
  </p>
 </div>


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